Seagate Technology Holdings plc (STX) Shareholders & Insider Trades
Seagate Technology Holdings shareholders at a glance
The largest holder of Seagate Technology Holdings stock is Vanguard Capital Management LLC, with 14.6 million shares (6.46% of the company), worth about $12.12 billion as of September 25, 2026. The 10 largest holders together own 35.0%.
In Q2 2026, 2,084 institutional holdings reports listed shares worth $181.00 billion.
Insiders reported 99 transactions in the last two years: 43 sales worth $123.75 million and no purchases. The newest one on file is from May 14, 2026 (Teh Ban-Seng, Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 14, 2026.
Seagate Technology Holdings plc
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Seagate Technology Holdings shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Vanguard Capital Management LLC | 14.6 million | 6.46% | $12.1B |
| BlackRock Advisors LLC | 10.8 million | 4.76% | $8.9B |
| State Street Corporation | 9.9 million | 4.37% | $8.2B |
| Fidelity Management & Research Co. LLC | 8.1 million | 3.59% | $6.7B |
| Vanguard Portfolio Management LLC | 8.0 million | 3.53% | $6.6B |
| Invesco Advisers, Inc. | 7.5 million | 3.33% | $6.2B |
| WCM Investment Management LLC | 5.3 million | 2.35% | $4.4B |
| JPMorgan Investment Management, Inc. | 5.2 million | 2.29% | $4.3B |
| Geode Capital Management LLC | 5.2 million | 2.27% | $4.3B |
| Eaton Vance Management | 4.7 million | 2.08% | $3.9B |
As of September 25, 2026.
Seagate Technology Holdings institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 2,084 | – | $181.0B |
| Q1 2026 | 1,560 | 190.0 million | $74.0B |
| Q4 2025 | 1,362 | 194.0 million | $53.4B |
| Q3 2025 | 1,213 | 207.0 million | $48.9B |
| Q2 2025 | 1,025 | 202.0 million | $29.1B |
| Q1 2025 | 863 | 199.0 million | $16.9B |
| Q4 2024 | 874 | 191.0 million | $16.5B |
| Q3 2024 | 879 | 210.0 million | $22.9B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Seagate Technology Holdings insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Teh Ban-Seng | May 14, 2026 | Officer | Sale at price 800.26 - 830.75 per share. | $12.7M |
| Teh Ban-Seng | May 14, 2026 | Officer | Conversion of Exercise of derivative security at price 64.31 - 101.34 per share. | $611,617 |
| Romano Gianluca | May 7, 2026 | Chief Financial Officer | Sale at price 770.00 per share. | $1.5M |
| Romano Gianluca | May 6, 2026 | Chief Financial Officer | Sale at price 754.92 - 786.84 per share. | $17.4M |
| Tilenius Stephanie Schear | May 5, 2026 | Director | Sale at price 766.60 - 767.33 per share. | $1.2M |
| Lee James Ci | May 4, 2026 | Officer | Sale at price 741.17 per share. | $516,595 |
| Morris John Christopher | May 4, 2026 | Chief Technology Officer | Sale at price 731.65 - 748.14 per share. | $4.2M |
| Lee James Ci | Apr 22, 2026 | Officer | -- | – |
| Mosley William D | Apr 1, 2026 | Chief Executive Officer | Sale at price 399.05 - 427.97 per share. | $8.4M |
| Mosley William D | Mar 19, 2026 | Chief Executive Officer | Sale at price 406.77 per share. | $10.0M |
| Morris John Christopher | Mar 13, 2026 | Chief Technology Officer | Sale at price 377.44 per share. | $42,273 |
| Mosley William D | Mar 11, 2026 | Chief Executive Officer | -- | – |
Newest 12 of 99 insider transactions in the last two years.
Questions and answers
Who owns the most Seagate Technology Holdings stock?
Vanguard Capital Management LLC, with 6.46% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (4.76%) and State Street Corporation (4.37%).
How many institutions own Seagate Technology Holdings stock?
2,084 institutional holdings reports listed Seagate Technology Holdings shares in Q2 2026 worth $181.00 billion.
Are Seagate Technology Holdings insiders buying or selling the stock?
In the last two years insiders reported 43 sales and no purchases (99 transactions in all); the newest on file is from May 14, 2026.
